[fstream.general] (original) (raw)

31 Input/output library [input.output]

31.10 File-based streams [file.streams]

31.10.6 Class template basic_fstream [fstream]

31.10.6.1 General [fstream.general]

namespace std { template<class charT, class traits = char_traits<charT>> class basic_fstream : public basic_iostream<charT, traits> { public: using char_type = charT;using int_type = typename traits::int_type;using pos_type = typename traits::pos_type;using off_type = typename traits::off_type;using traits_type = traits;using native_handle_type = typename basic_filebuf<charT, traits>::native_handle_type; basic_fstream();explicit basic_fstream( const char* s, ios_base::openmode mode = ios_base::in | ios_base::out);explicit basic_fstream( const filesystem::path::value_type* s, ios_base::openmode mode = ios_base::in | ios_base::out); explicit basic_fstream( const string& s, ios_base::openmode mode = ios_base::in | ios_base::out);template<class T> explicit basic_fstream(const T& s, ios_base::openmode mode = ios_base::in | ios_base::out); basic_fstream(const basic_fstream&) = delete; basic_fstream(basic_fstream&& rhs); basic_fstream& operator=(const basic_fstream&) = delete; basic_fstream& operator=(basic_fstream&& rhs);void swap(basic_fstream& rhs); basic_filebuf<charT, traits>* rdbuf() const; native_handle_type native_handle() const noexcept;bool is_open() const;void open( const char* s, ios_base::openmode mode = ios_base::in | ios_base::out);void open( const filesystem::path::value_type* s, ios_base::openmode mode = ios_base::in | ios_base::out); void open( const string& s, ios_base::openmode mode = ios_base::in | ios_base::out);void open( const filesystem::path& s, ios_base::openmode mode = ios_base::in | ios_base::out);void close();private: basic_filebuf<charT, traits> sb; };}

The class templatebasic_fstream<charT, traits>supports reading and writing from named files.

It uses abasic_filebuf<charT, traits>object to control the associated sequences.

For the sake of exposition, the maintained data is presented here as: